Answer:
About 530cm²
Explanation:
C=2×pi×radius
81.58=2×3.14×radius
81.58=6.28r
81.58÷6.28=6.28r÷6.28
About 12.99cm is radius.
A=pi×radius²
A=3.14×12.99²
A=3.14×168.7401
A=529.843914
Area is about 530cm²
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